+Unit+3+单元重点知识详解 人教版英语九年级全册

人教九年级 U3句型1.However,itisimportanttolearnhowtousetherightlanguageindifferentsituations.然而在不同情况下，学会怎样使用合适的语言很重要。2.Theexpressionstheyusemightdependonwhomtheyarespeakingtoorhowwelltheyknoweachother.他们所使用的表达方式取决于他们和谁说话，或他们彼此之间有多熟悉。3.Sometimesweevenneedtospendtimeleadingintoarequest.有时，我们甚至需要花时间来导入一个请求。4.I’mlookingforwardtoyourreply.我期待着你的回复。5.You’realwaysinarushtogettoschoolontime.你总是急匆匆地准时到达学校。二、重点详解1.onone’swayto…在去……的路上onone’swayhome…在某人回家的路上2.apairof意为“一双/一对/一副……”apairof作主语时，谓语动词用单数；“数词＋pairs＋of”作主语时，谓语动词用复数。疑问词＋不定式结构“疑问词＋不定式”结构常用在know,decide,findout,tell,forget,remember,see,understand等动词后作宾语，相当于宾语从句。当宾语从句的主语与主句的主语相同时，宾语从句可转换为“疑问词＋不定式结构”。4.between/amongbetween 指“两者之间”常与and连用among “在中间”一般用于三者或三者以上的人或物之间5.across/through/over/past/crossacross为介词，表示“从……表面穿过”或者“横穿”，指从某个范围的一边到另一边。through为介词，表示“从……中间穿过”，往往指穿过沙漠、森林，(光线)透过窗户等。over多表示从“上方越过”，past表示从“面前经过”cross为动词，表示“穿过”6.turnTurnon打开（指打开电器）→（反）turnoff关闭turnup把音量调大→（反）turndown把音量调小turnleft向左转turnright向右转7.excusen.理由；借口

vt.原谅；为…申辩；给…免去8.until直到….为止,肯定形式表示的意思是"做某事直至某时"，动词必须是延续性的not…until直到…才强调动作直到until后的时间才发生。not通常与首句中的be动词、助动词或情态动词连用。否定形式表达的意思是"直至某时才做某事"。动词为延续性或非延续性都可以9.promisen承诺，诺言v.promisetosb.向某人做出承诺makepromisestosb.向某人作出承诺keepone’spromise遵守承诺suggestv建议；提议→suggestion（可数n）建议suggestdoingsth建议做某事suggestsb.doingsth.建议某人做某事11.seem系动词“似乎，好像”seem+adj.seemtodosthseemtobe+adj12.buy(bought,bought)v购买；买buysbsth(＝buysthforsb)意为“给某人买某物”。sellsbsth(＝sellsthtosb)意为“把某物卖给某人”。练习一、单项选择1．—Couldyoupleasetellmehowtogetto________nearestbookstore?—Sure.Turn________leftatthesecondcrossing.Youwillfinditeasily.A．/;/ B．the;a C．the;/ D．/;the2．—TheInternethasmadecommunicationmuchmore______.—Iagree.Forexample,IcancommunicatewithmyfriendsonWechatanytime.A．popular B．convenient C．important D．necessary3．IwouldliketosendapostcardtoMissGreen,butIdon'tknowhernew

________.A．opinion B．address C．business D．decision4．Don'taskMissSmith'sage.

Itis

________.A．impossible B．fascinating C．friendly D．impolite5．—Where'stherestroom,please? —________?Youspoketooquickly.A．Sorry B．No C．Excuseme D．Pardonme二、用所给词的适当形式填空1．Tom(rush)toschoolbecausehewaslateforclass.2．Whynot(ask)theteachersforhelp?3．Weshouldbecarefulwhen(cross)thestreet.4．Don’tspeakto(strange).It’sverydangerous.5．Couldyouplease(give)meanotherapple?6．Doyouknow____________(who)they’rewaitingfor?7．Doyouknowwhoisthe___________(speak)attomorrow’smeeting?8．Thesearesimilar___________(request)for____________(direct).9．Itseems___________(difficult)tospeakpolitelythan__________(direct).10．Thisskirtisonly15yuan,it’s__________(expensive).三、完成句子1.你能告诉我洗手间在哪里吗？Couldyoupleasetellme_________restrooms_________? 2.打扰一下,你知道我能在哪里买药吗？Excuseme,doyouknowwhere________________buysomemedicine?3.我想如道我们接下来去哪儿。I________________weshouldgonext.4.知道怎样有礼貌地寻求帮助是重要的。It’simportanttoknowhow______________forhelp________.5.似乎有礼貌地说话比直接表达更困难。_________mightseemmoredifficult____________________________________________.6.我们拿了第一名。其他同学想知道为什么我们能赢得比赛。Wegotthefirstprize.Otherstudentswonderedtherace.7.“天宫课堂”系列很受欢迎，我想知道学生们注意它多久了。“TiangongClass”seriesisverypopular.Iwonderofthestudents.8.我想知道这副手套使你想起了谁。Iwonder.9.凯特想知道她将什么时候再有机会来中国旅游。KatewondersachancetovisitChinaagain.10.我们永远不知道未来会发生什么！Weneverwillhappeninthefuture!四、句型转换1．Gopastthebankandtakethefirstcrossingonyourleft.（改为同义句）thebankandatthefirstcrossing.2．Idon’tknowhowIcangetthestamp.（改为简单句）Idon’tknowthestamp.3．Whendoeshecomeback?Pleasetellme.（改为含宾语从句的复合句）Pleasetellme